#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>

int main()
{
	int n = 0;
	int x = 0;
	int arr[20] = { 0 };
	scanf("%d ", &n);
	scanf("%d", &x);
	for (int i = 0; i < n; i++)
	{
		scanf("%d", &arr[i]);

	}
	for (int j = 0; j < n; j++)
	{
		if (x == arr[j])
		{
			printf("%d", j);
			return 0;
		}
		else
		{
			if (j == n - 1)
			{ 
				printf("Not Found");
			}
		}
	}
	

	return 0;

}